Asymmetric aircraft's are fascinating so build an ssto out of it! I intend to try this myself one day as it's interesting.
Noob level: Make it fly.
Bob level: Create an orbit around Kerbin.
Jeb level: Land on the Mun.
Val level: Land on the Mun then return to Kerbin.
Here is a real life assymetric airplane for reference Blohm & Voss BV 141.